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remove some memsets for unnecessarily clearing padding

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Signed-off-by: Erik Boasson <eb@ilities.com>
This commit is contained in:
Erik Boasson 2018-08-05 08:24:25 +02:00 • committed by eboasson
parent e84e644702
commit bb8d3d808c
1 changed files with 6 additions and 1 deletions
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7
src/core/ddsi/src/ddsi_ser.c
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@ -29,6 +29,7 @@
#include "q__osplser.h"
#define MAX_POOL_SIZE 16384
#define CLEAR_PADDING 0
#ifndef NDEBUG
static int ispowerof2_size (size_t x)
@ -175,7 +176,7 @@ static serstate_t serstate_allocnew (serstatepool_t pool, const struct sertopic
size = offsetof (struct serdata, data) + st->size;
st->data = os_malloc (size);
memset (st->data, 0, size);
memset (st->data, 0, sizeof (*st->data));
st->data->v.st = st;
serstate_init (st, topic);
return st;
@ -219,13 +220,17 @@ void * ddsi_serstate_append_aligned (serstate_t st, size_t n, size_t a)
buffer: ddsi_serstate_append() is called immediately afterward and will
grow the buffer as soon as the end of the requested space no
longer fits. */
#if CLEAR_PADDING
size_t pos0 = st->pos;
#endif
char *p;
assert (ispowerof2_size (a));
st->pos = alignup_size (st->pos, a);
p = ddsi_serstate_append (st, n);
#if CLEAR_PADDING
if (p && st->pos > pos0)
memset (st->data->data + pos0, 0, st->pos - pos0);
#endif
return p;
}